40 Inch Heavy Liquid Bubble Chamber, ANL
40 inch Michigan-Argonne heavy liquid bubble chamber showing the 46 kilogauss magnet (octagonal structure) in the center, 1968. A bubble chamber is a vessel filled with a superheated transparent liquid (most often liquid hydrogen) used to detect electrically charged particles moving through it. The bubble chamber is similar to a cloud chamber, both in application and in basic principle. It is normally made by filling a large cylinder with a liquid heated to just below its boiling point. As particles enter the chamber, a piston suddenly decreases its pressure, and the liquid enters into a superheated, metastable phase. Charged particles create an ionization track, around which the liquid vaporizes, forming microscopic bubbles. Bubble density around a track is proportional to a particle's energy loss. Bubbles grow in size as the chamber expands, until they are large enough to be seen or photographed.
Size: 3900px × 2984px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1960s, 1968, 20th, 40, america, american, anl, argonne, bubble, bw, century, chamber, department, detection, detector, doe, energy, heavy, historic, historical, history, laboratory, liquid, michigan-argonne, national, particle, physics, research, science, states, united, usa
